反应详情

A mixture of 1-(2-bromomethyl-3-difluoromethoxyphenyl)-4-methyl-1,4-dihydrotetrazole-5-one (described in Reference Preparation example 1) 0.30 g, methyl-4-(3,4,5-trimethyl-pyrazol-1-yl)-phenol (described in Reference Preparation example 20) 0.26 g, potassium carbonate 0.21 g and acetonitrile 10 ml was stirred with heating under reflux for six hours. After cooling to room temperature, the reaction mixture was filtered, and the filtrate was then concentrated. The resulting residue was subjected to a silica gel column chromatography to give 1-{3-difluoromethoxy-2-[2-methyl-4-(3,4,5-trimethyl-pyrazol-1-yl)-phenoxymethyl]-phenyl}-4-methyl-1,4-dihydrotetrazole-5-one (hereinafter, referred to as “Present compound 1”) 0.31 g.

1. temperaturewith heating
2. temperatureunder reflux for six hours
3. filtrationthe reaction mixture was filtered
4. concentrationthe filtrate was then concentrated